class RuboCop::TargetRuby::BundlerLockFile

def bundler_lock_file_path
  @config.bundler_lock_file_path
end

def find_version
  lock_file_path = bundler_lock_file_path
  return nil unless lock_file_path
  in_ruby_section = false
  File.foreach(lock_file_path) do |line|
    # If ruby is in Gemfile.lock or gems.lock, there should be two lines
    # towards the bottom of the file that look like:
    #     RUBY VERSION
    #       ruby W.X.YpZ
    # We ultimately want to match the "ruby W.X.Y.pZ" line, but there's
    # extra logic to make sure we only start looking once we've seen the
    # "RUBY VERSION" line.
    in_ruby_section ||= line.match(/^\s*RUBY\s*VERSION\s*$/)
    next unless in_ruby_section
    # We currently only allow this feature to work with MRI ruby. If
    # jruby (or something else) is used by the project, it's lock file
    # will have a line that looks like:
    #     RUBY VERSION
    #       ruby W.X.YpZ (jruby x.x.x.x)
    # The regex won't match in this situation.
    result = line.match(/^\s*ruby\s+(\d+\.\d+)[p.\d]*\s*$/)
    return result.captures.first.to_f if result
  end
end

def name
  "`#{bundler_lock_file_path}`"
end